Weigh in motion strip scale having plural compliant features

ABSTRACT

A strip scale suitable for use in connection with high speed, in motion weighing applications. The scale has a base, a load cell, a compliant member, and a platform. Also disclosed are load cells for use with the scale, and systems and methods for using the scales.

CROSS REFERENCE TO RELATED APPLICATIONS, IF ANY

This application is a continuation of U.S. patent application Ser. No.15/169,570, filed May 31, 2016, which is a continuation-in-part of U.S.patent application Ser. No. 14/051,255, filed Oct. 10, 2013; issued asU.S. Pat. No. 9,354,105 on May 31, 2016, which claims the benefit under35 U.S.C. § 119(e) of U.S. Provisional Patent Application Ser. No.61/960,140, filed Sep. 11, 2013, status converted; and U.S. ProvisionalPatent Application Ser. No. 61/712,002, filed Oct. 10, 2012, statusconverted, which are hereby incorporated by reference.

37 C.F.R. § 1.71(E) AUTHORIZATION

A portion of the disclosure of this patent document contains materialwhich is subject to copyright protection. The copyright owner has noobjection to the facsimile reproduction by anyone of the patent documentor the patent disclosure, as it appears in the US Patent and TrademarkOffice patent file or records, but otherwise reserves all copyrightrights whatsoever.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable.

REFERENCE TO A MICROFICHE APPENDIX, IF ANY

Not applicable.

BACKGROUND OF THE INVENTION Field of the Invention

The present invention relates, generally, to weighing systems, apparatusand methods. Particularly, the invention relates to a strip scale usedfor example to weigh vehicles or other articles while they are inmotion. The scale of the invention is particularly well suited forweighing of vehicles moving at high speeds over road ways.

Background Information

Existing technology in this field is believed to have significantlimitations and shortcomings.

All US patents and patent applications, and all other publisheddocuments mentioned anywhere in this application are incorporated byreference in their entirety.

BRIEF SUMMARY OF THE INVENTION

The present invention provides weighing apparatus and methods which arepractical, reliable, accurate and efficient, and which are believed toconstitute an improvement over the background technology.

In one aspect, the invention provides a scale comprising, a base forplacement on a surface, the base having an elongated configuration, atleast one load cell communicatively connected to the base, a platformdisposed over the base, the platform being communicatively connected tothe at least one load cell, and at least one compliant member disposedbetween the at least one load cell and the platform.

In another aspect, the invention provides a scale adapted to be embeddedin a roadway and used in electronic, in-motion, high speed weighing ofvehicles or cargo passing over the scale comprising,

-   a. a base for placement on a surface, the base having an elongated    configuration,-   b. a plurality of load cells communicatively connected to the base,-   c. a platform disposed over the base, the platform being    communicatively connected to the at least one load cell,-   d. at least one compliant member disposed between the at least one    load cell and the platform;-   e. at least one compliant member disposed between that at least one    load cell and the base; and-   f. at least one compliant member disposed between the load cells.

The present invention is believed to involve novel elements, combined innovel ways to yield more than predictable results. The problems solvedby the invention were not fully recognized in the prior art.

The aspects, features, advantages, benefits and objects of the inventionwill become clear to those skilled in the art by reference to thefollowing description, claims and drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

FIG. 1 is a perspective view of an embodiment of the strip scale of thepresent invention.

FIG. 2 is a front, elevation view of the scale.

FIG. 3 is a crossectional view of the scale taken along line 3-3 of FIG.2.

FIG. 4 is a crossectional view of the scale taken along line 4-4 of FIG.2.

FIG. 5 is bottom view of the scale.

FIG. 6 is a detailed view of the scale portion shown in FIG. 4.

FIG. 7 is a top view of the scale.

FIG. 8 is an end view of the scale.

FIG. 9 is an opposite end view of the scale.

FIG. 10 is a longitudinal crossectional of the scale taken along line10-10 of FIG. 7.

FIG. 11 is a detailed view of the portion of the scale shown in FIG. 10.

FIG. 12 is an exploded view of the scale.

FIG. 13 is a perspective view of a first alternative embodiment of thestrip scale of the invention.

FIG. 14 is a front, elevation view of the scale.

FIG. 15 is a crossectional view of the scale taken along line 15-15 ofFIG. 14.

FIG. 16 is a crossectional view of the scale taken along line 16-16 ofFIG. 14.

FIG. 17 is top view of the scale.

FIG. 18 is a detailed view of the scale portion shown in FIG. 15.

FIG. 19 is a detailed view of the scale portion shown in FIG. 16.

FIG. 20 is a top view of the scale.

FIG. 21 is an end view of the scale.

FIG. 22 is an opposite end view of the scale.

FIG. 23 is a longitudinal crossectional of the scale taken along line23-23 of FIG. 20.

FIG. 24 is a detailed view of the portion of the scale shown in FIG. 23.

FIG. 25 is an exploded view of the scale.

FIG. 26 is a perspective view of a second alternative embodiment of thestrip scale of the invention.

FIG. 27 is a front, elevation view of the scale.

FIG. 28 is a crossectional view of the scale taken along line 28-28 ofFIG. 27.

FIG. 29 is a crossectional view of the scale taken along line 29-29 ofFIG. 27.

FIG. 30 is a bottom view of the scale.

FIG. 31 is a detailed view o he scale portion shown in FIG. 28.

FIG. 32 is a detailed view of the scale portion shown in FIG. 29.

FIG. 33 is a top view of the scale.

FIG. 34 is an end view of the scale.

FIG. 35 is an opposite end view of the scale.

FIG. 36 is a longitudinal crossectional of the scale taken along line36-36 of FIG. 33.

FIG. 37 is a detailed view of the portion of the scale shown in FIG. 36.

FIG. 38 is an exploded view of the scale.

FIG. 39 is a perspective view of a third alternative embodiment of thestrip scale of the invention.

FIG. 40 is a front, elevation view of the scale.

FIG. 41 is a crossectional view of the scale taken along line 41-41 ofFIG. 40.

FIG. 42 is a crossectional view of the scale taken along line 42-42 ofFIG. 40.

FIG. 43 is a bottom view of the scale.

FIG. 44 is a detailed view of the scale portion shown in FIG. 42.

FIG. 45 is a top view of the scale.

FIG. 46 is an end view of the scale.

FIG. 47 is an opposite end view of the scale.

FIG. 48 is a longitudinal crossectional the scale taken along line 48-48of FIG. 45.

FIG. 49 is a detailed view of the portion of the scale shown in FIG. 48.

FIG. 50 is an exploded view of the scale.

FIG. 51 is an exploded view of a fourth alternative embodiment of thestrip scale of the invention.

FIG. 52 is a perspective view of the strip scale of FIG. 51.

FIG. 53 is a side view of the strip scale.

FIG. 54 is a top view of the strip scale.

FIG. 55 is a lateral or transverse crossectional view of the scale takenalong line 55-55 of FIG. 53

FIG. 56 is a detailed view of FIG. 55.

FIG. 57 is another top view of the scale.

FIG. 58 is an end view of the scale.

FIG. 59 is an opposite end view of the scale

FIG. 60 is yet another top view the scale.

FIG. 61 is a longitudinal crossectional view of the scale taken alongline 61-61 of FIG. 60.

FIG. 62 is a detailed view of the area “62” of FIG. 61.

FIG. 63 is a perspective view of an embodiment of a disc shaped loadcell for use in a strip scales shown in FIGS. 13-38 and 51.

FIG. 64 is a front, elevation view thereof.

FIG. 65 is a top view thereof.

FIG. 66 is a bottom view thereof.

FIG. 67 is a perspective view of an alternative embodiment of a loadcell, a single ended, shear beam configuration, for use in the stripscales shown in FIGS. 1-12 and 39-50.

FIG. 68 is a front, elevation view thereof.

FIG. 69 is a top view thereof.

FIG. 70 is an end view thereof.

FIG. 71 is a front elevation view of a fifth alternative embodiment ofthe strip scale of the present invention.

FIG. 72 is an end view of the strip scale.

FIG. 73 is an exploded view, in perspective, of the strip scale.

FIG. 74 is another perspective view of the strip scale.

FIG. 75 is perspective view of a first embodiment of a load cell for usewith the strip scale of FIGS. 71-74.

FIG. 76 is an end view of the load cell of FIG. 75.

FIG. 77 is a front elevation view, broken to fit on the page, of theload cell of FIGS. 75.

FIG. 78 is a perspective view of a second embodiment of the load cell.

FIG. 79 is an end view thereof.

FIG. 80 is a side elevation view thereof, broken for clarity.

FIG. 81 is a perspective view of a third embodiment of the load cell.

FIG. 82 is an end view thereof.

FIG. 83 is a side elevation view thereof, broken for fit.

FIG. 84 is a perspective view of fourth embodiment of the load cell.

FIG. 85 is a further perspective view thereof.

FIG. 86 is an end view thereof.

FIG. 87 is a side elevation view thereof, broken for fit.

FIG. 88 is a perspective view of fifth embodiment of the load cell.

FIG. 89 is a further perspective view thereof.

FIG. 90 is an end view thereof.

FIG. 91 is a side elevation view thereof, broken for fit.

FIG. 92 is a detailed view of a portion of the load cell from one endand at the bottom.

FIG. 93 is a top view of one embodiment of a gauging pattern on a loadcell.

FIG. 94 is a bottom view of he gauging pattern shown in FIG. 93.

FIG. 95 is a end diagram for another embodiment of a process of gaugingyet another embodiment of a load cell.

FIGS. 96A and B are compression side and tension side view of thegauging process of FIG. 95.

FIG. 97 is a perspective view of an embodiment of a base of the stripscale of FIGS. 71-74.

FIG. 98 is a top view of the base.

FIG. 99 is a crossectional view of the base, taken along line 99-99 ofFIG. 98.

FIG. 100 is a perspective view of an embodiment of a platform of thestrip scale of FIGS. 71-74.

FIG. 101 is a side elevation view of the platform.

FIG. 102 is a crossectional view of the platform taken along line102-102 of FIG. 100.

FIG. 103 is a top view of an embodiment of a top plate of the stripscale of FIGS. 71-74.

FIG. 104 is a bottom view of the top plate.

FIG. 105 is a side elevation view of the top plate.

FIG. 106 is a crossectional view of the top plate taken along line106-106 of FIG. 103.

FIG. 107 is a front elevation view of a sixth alternative embodiment ofthe strip scale of the invention, having a length substantially longerthan the embodiment of FIGS. 71-74, and further including a pair of loadcells.

FIG. 108 is an exploded view, in perspective, of the scale of FIG. 105.

FIG. 109 is an end view of the scale.

FIG. 110 is a detailed end view.

FIG. 111 is a perspective view of a seventh alternative embodiment ofthe scale of the invention.

FIG. 112 is a side elevation view of the scale.

FIG. 113 is a top plan view of the scale.

FIG. 114 is an end view of the scale.

FIG. 115 is a lateral crossectional view of the scale, taken along line115-115 of FIG. 112.

FIG. 116 is a longitudinal crossectional view of the scale, taken alongline 116-116 of FIG. 113.

FIG. 117 is an exploded view of the scale.

FIG. 118 is a perspective view of the first checking plate of the scale.

FIG. 119 is a top view of the first checking plate.

FIG. 120 is a side view of the first checking plate.

FIG. 121 is a top perspective view of an embodiment of a load cell foruse with the scale embodiment of FIGS. 111-120.

FIG. 122 is a bottom perspective view of the load cell.

FIG. 123 is a top plan view of the load cell.

FIG. 124 is a side view of the load cell, with interior structure shownin phantom.

FIG. 125 is a crossectional view of the load cell, taken along line125-125 of FIG. 123.

FIG. 126 is a detailed view of he load cell, taken at area—126—of FIG.125.

FIG. 127 is a crossectional view of a portion of the load cell taken atline 127-127 of FIG. 123.

FIG. 128 illustrates an embodiment of a strip scale of the invention inuse on a road for weighing vehicles in motion.

FIG. 129 is a plan view of the system.

FIG. 130 is an end view of the system embedded in a roadway.

FIG. 131 is a perspective view of a further alternative embodiment ofthe scale of the invention.

FIG. 132 is a top view of the scale of FIG. 131.

FIG. 133 is a side view of the scale.

FIG. 134 is an end view of the scale.

FIG. 135 is a crossectional view of the scale, taken along line 135-135of FIG. 133.

FIG. 136 is a detailed view of FIG. 135.

FIG. 137 is a detailed view of the section “137” of FIG. 136.

FIGS. 138-143 are sectional views of alterative embodiments of the scalebase of FIGS. 131-137.

FIG. 144 is a sectional view of a further alternative embodiment of thescale base.

FIG. 145 is an exploded view of an alternative embodiment of the stripscale of the present invention

FIG. 146 is a perspective view of an embodiment of a base member of thescale shown in FIG. 145.

FIG. 147 is a perspective view of an embodiment of a platform member ofthe scale of FIG. 145.

FIG. 148 is an exploded view of another alternative embodiment of thestrip scale.

FIG. 149 is a crossectional view of the strip scale of FIG. 148.

FIG. 150 is a crossectional view of another embodiment of a compliantelement of the strip scale of FIG. 145.

FIG. 151 is a crossectional view of yet another embodiment of acompliant element of the strip scale of FIG. 145.

FIG. 152 is a crossectional view of a further embodiment of a compliantelement of the strip scale of FIG. 145.

FIG. 153 is a crossectional view of the strip scale of FIG. 145.

FIG. 154 is a perspective view of an embodiment of a load cell for usewith strip scales.

FIG. 155a is a front or side view of the load cell of FIG. 154.

FIG. 155B is an end view of the load cell.

FIG. 156 is a detailed view of an end portion of the load cell.

FIG. 157 is another detailed view of the end portion.

FIG. 158 is yet another detailed view of the end portion.

FIG. 159 is an end view of another embodiment of a load cell.

FIG. 160 is an alternative embodiment of the load cell of FIG. 159,including outside plates.

FIG. 161 is another alternative embodiment of the load cell of FIG. 159,including bent outside plates.

FIG. 162 is yet another alternative embodiment of the load cell of FIG.159, including inside plates.

FIG. 163 is a side or front view of the load cell of FIG. 159.

FIG. 164 is another end view of the load cell of FIG. 159.

FIG. 165 is a front or side view of the load cell of FIG. 162.

FIG. 166 is another end view of the load cell of FIG. 162.

FIG. 167 is a front or side view of the load cell of FIG. 160.

FIG. 168 is another end view of the load cell of FIG. 160.

FIG. 169 is a front or side view of the load cell of FIG. 161.

FIG. 170 is another end view of the load cell of FIG. 161.

FIG. 171 is an end view of another embodiment of a load cell.

FIG. 172 is an alternative embodiment of the load cell of FIG. 171,including outside plates.

FIG. 173 is another alternative embodiment of the load cell of FIG. 171,including bent outside plates.

FIG. 174 is yet another alternative embodiment of the load cell of FIG.171, including inside plates.

FIG. 175 is a side or front view of the load cell of FIG. 171.

FIG. 176 is another end view of the load cell of FIG. 171.

FIG. 177 is a front or side view of the load cell of FIG. 174.

FIG. 178 is another end view of the load cell of FIG. 174.

FIG. 179 is a front or side view of the load cell of FIG. 172.

FIG. 180 is another end view of the load cell of FIG. 172.

FIG. 181 is a front or side view of the load cell of FIG. 173.

FIG. 182 is another end view of the load cell of FIG. 173.

DETAILED DESCRIPTION

The scale of the present invention is suitable to weigh vehicles orother articles while they are in motion. The scale is particularly wellsuited for weighing of vehicles moving at high speeds over road ways.The scale may be used for example by embedding the scale in a roadwayeither during construction of the roadway or after construction byretrofit, and then weighing vehicles traveling at normal speeds over theroadway of for example of 35-75 miles per hour. Examples of vehiclesinclude motorcycles, cars, trucks, buses and the like.

FIGS. 1-12 show an embodiment of a strip scale 10 of the presentinvention. The strip scale 10 has an elongated, strip-like configurationwith a low profile. It may be placed on a surface such as a road or afloor, either directly or indirectly as part of a larger weighingsystem. The strip scale 10 may be used for static weighing, but it isideally suited for in motion weighing of vehicles or craft such as cars,trucks, aircraft, boats and other consumer, commercial, industrial,municipal or military articles or apparatus. The scale 10 is relativelylong and thin compared to known scales and very low profile. As is bestshown in FIGS. 1, 2, and 8-12, the scale 10 basically comprises a bottombase 11, a plurality of load cells 12, and a top platform 13. The base11 is placed on a support surface such as a floor, roadway or mountingarea of a floor or roadway 50. The base 11 is constructed of a strong,rigid material such as steel (preferably stainless steel) or aluminum(preferably 6061 aluminum). The platform 13 is preferably constructed ofthe same or similar material as the base 11. The load cell 12 is placedon the top surface of the base 11. Platform 13 is placed over the topplate 13. Top fastening screws 17 are oriented through apertures 18 a(threaded) of the platform 14 and apertures 18 b at one end of the loadcells 12 to connect the platform 14 to the load cells 12. Circular,washer shaped spacers 20 are disposed between the top of the load cells12 and the bottom of the platform 13. A pair of lower fastening screws30 a/b are oriented through apertures 31 a/b (threaded) of the base 11and apertures 32 a/b (threaded) at an opposite end the load cells 12 toconnect each load cell 12 to the base 11. Nuts 33 a/b secure theconnection. A spacer 34, with apertures 35 a/b, is disposed between thebase 11 and each load cell.

The strip like configuration of the scale 10, and the other embodimentsdescribed below, is at least three (3) times longer than it is wide, andpreferably between 17-22 times longer. The range of satisfactory lengthsand widths is 2.0-6.0 inches (5.08-15.24 cm) wide, and 20.0-78.7 inches(0.5-2.0 meters) long. Preferably, the scale is approximately 3.41inches (8.66 cm) wide and a length of 1.5 meters (59.0 in.), 1.75 meters(68.8 in.) or 2.0 meters (78.7 in). The scales are relatively lowprofile. A preferred height is approximately 1.465 to 1.475 inches(3.721 to 3.746 cm).

FIGS. 1, 2, 5, 10 and 12 show an embodiment of the base 11 having anelongated rectangular configuration with a predetermined length, widthand height. Base 11 has a flat bottom surface 40 and a substantiallyflat top surface 41. Recesses 43 of predetermined dimensions aredisposed in the top surface 41 of the base 11 for placement of the loadcells 12. An end portion 44 is disposed at one end of the base 11. FIGS.1, 2, 7, and 12 show an embodiment of the platform 13 having anelongated rectangular configuration with predetermined length, width,height and thickness. Platform 13 has top and bottom flat surfaces.Referring also to FIGS. 10 and 11, recesses 45 are disposed in thebottom surface of the platform 11 to accommodate the nuts 33. Referringto FIGS. 10-12, in the preferred embodiment, six (6) load cells 12 a-fare used. However, it is within the purview of the invention thatbetween one and ten load cells may be used. This embodiment of the scale10 uses single ended, shear beam load cells 12 oriented in-line witheach other in a tandem or end to end fashion. As is shown in FIG. 12,three load cells on one end of the scale 10 have their ends connected tothe base 11 in one direction (for example to the right and towards thecenter or mid-point of the scale—lengthwise) and the other three loadcells have their base connected ends in the opposite direction (to theleft and towards the center/mid-point).

FIGS. 13-25 show a first alternative embodiment of the strip scale 100of the invention. Scale 100 is also elongated, thin and low profile. Italso has a bottom base assembly 111, several load cells 112, and a topplatform 113. As is best shown in FIGS. 23 and 25, load cells 112 aredisposed a predetermined distance apart on the base assembly 111. Basesides 120 a/b are connected to the base member 121 along its sides,longitudinally. End plates 122 are connected at the end of the basemember 121. A center (side loading) strap 123 is disposed over the loadcells 112. A first (bottom) 124 and a second 125 checking plate orflexure are disposed on top of the center strap 123. First spacers 126a, b and c (side 1, center and side 2) are disposed on top of the secondchecking plate 125. End straps 127 a/b are disposed at the ends. Third,fourth, fifth and sixth checking plates/flexures 128, 129, 130 and 131are disposed on top of the first spacers 126, respectively. Secondspacers 132 a, b and c (side 1, center and side 2) are disposed over thesixth flexure 131. And platform 113 is disposed over the second spacerset 132. Each load cell 112 has a pair of washers 133 a/b centrallydisposed on its top, and a top load button 134 is disposed on thewashers 133 for connection to the center spacer 123. Referring also toFIG. 24, the load cells 112 are connected to the base member 121 viadownwardly oriented screws 140. And the platform 113 is connected to thelayer of elements extending downwardly to the center strap 123 byupwardly oriented screws 141.

FIGS. 26-38 show a second alternative embodiment of the elongated, lowprofile strip scale 200 of the invention. Scale 200 has a substantiallysimilar structure and function to that of scale 100 described above,except, as best shown in FIG. 38, that it has a single checking plate orflexure 228 disposed between lower spacers 226 a-c and upper spacers 232a-c.

FIGS. 39-50 show a third alternative embodiment of the elongated, lowprofile strip scale 300 of the invention. Scale 300 a base 311 and aplatform 313. Beam type load cells 312 are disposed in apertures 320 inthe base 311. Channels are preferably machined into the base to permitrouting of electronic cables between the load cells and a disposition ofa summing junction. Layer 350 is a sealing member preferably constructedof extruded silicone foam rubber material, with apertures 351 alignedwith the load cells 312. The apertures permit addition of a pottingcompound, for example a gel, during installation of the scale 300 in aroadway. Side members 355 are disposed lengthwise with respect to thescale 300. The side members 355 protect the scale 300 duringinstallation and use. Side members 355 are flexible to permit scaleoperation and are preferably constructed of a foam material. End plates355 a-d enclose the scale 300.

The internal foam member 350 compresses due to the force exerted by thepotting gel. The potting gel is largely incompressible but has a verylow durometer allowing it to deform and transfer the force to thecompressible foam. The foam must be easily compressible. One commonmeans to quantify the compressibility is to report the force required tocompress the foam by 25% and report the results in pounds per square inor PSI. Suitable foams would have compressibility in the range of 3-20PSI. Foams in the ranges of 5-15 or 8-12 PSI are common. The foam mustalso have a closed cell structure to prevent water and other fluidabsorption. This is very important when designing scales for use in coldclimates with alternate thawing and freezing cycles. The must alsomaintain the flexibility at low temperatures. Many otherwise suitabletypes of foam become less flexible at cold temperatures. The foam mustalso be relatively inert and chemical resistant. Cross-linkedpolyethylene foam is low cost and commonly used for thermal insulation,industrial gaskets, packaging and in flotation equipment. It has lowmoisture permeability and high buoyancy. Silicone foam rubber is alsogood for the application although priced higher. In some applicationsdepending on scale dimensions and weather constraints, PVC/NBR,polyethylene, neoprene, urethane, EPDM, and other synthetic foam rubbersmay be suitable. The foam is ideally inserted to fill the space betweenthe scale base and platform. This may be 0.05 up to 1 inch. Typicalthickness of the foam is 0,25 to 0.75 inches. The foam may be compressedslightly under the platform but not more than 25% and ideally in therange of 5-15%. The width of the foam is generally from the side of thebase to close to the load cells. This may be in the range of 0.25-0.5inches. It may be important to leave a small gap between the load celland the foam to allow gel to flow between the load cell and foam. Thefoam also plays an important role in keeping the gel within the scaleduring pouring and the curing time.

The external layer of foam 355 separates the scale platform and bodyfrom the road surface. During installation, the scale is placed within acutout slot in the road way. After careful placement the void betweenthe scale and the roadway is filled in with a potting compound that istypically a type of epoxy, polyurethane or cementitious product. Thepotting compound cures adjacent to and directly to the foam and to thecement or asphalt road. The foam allows the scale platform to deflectslightly relative to the roadway due to its flexibility. An installationwithout the foam would result in very poor performance due to theplatform being bonded to the roadway. Many of the requirements on thefoam are met by the internal foam discussed elsewhere in thespecification. Additional requirements are of ultra-violentinsensitivity and very durable against abrasion. Tough silicone foamrubbers in the 5-15 PSI range are ideal for this application althoughothers may be suitable. The foam must be thin to prevent pebbles andexcessive abrasion on the road surface and ideally less than 0.15-0.25inches. The foam must also be thick enough to create a low resistance toflexing and compression to allow for optimal scale performance. Minimumdimensions are in the range of 0.05 to 0.1 inches for highlycompressible materials. The preferred external foam is a 10 PSI siliconefoam rubber with a nominal ⅛ inch or 3 mm thickness and a pressuresensitive adhesive backing allowing it to be placed directly over theplatform and extending down to the base also covering the gap betweenthe platform and base.

The scales are typically placed in the roadway or runway and exposed toweather elements including rain, snow, ice and sleet. The substratecould be constructed using asphalt, cement, steel, gravel or anycombination thereof and generally porous to liquids and or continuouslysaturated. In cold weather regions where salt is used to melt snow andice or near the shoreline, the potential for problems is more acute dueto the corrosive nature of saltwater and the damage it may cause to theload cells, wires and electronics. The potting gel creates a barrier toprotect the sensitive elements from external liquid. In order tomaintain the performance, the gel must have a very low durometertypically measured on the Shore 00 scale. Alternatively, the gels may bequantified with a probe and measuring the force to insert probe to apredetermined depth. Suitable gels are commonly termed reenterable gelsin that they allow entry of a tool and reseal themselves. The gels mustalso have high resistivity and insulation values as well as maintainingthe flexibility at cold temperatures commonly specified at −40 degreesCelsius. Silicone gels that meet these specifications are available.There are newer polyurethane and epoxy gels that may be suitable in someapplications.

An alternative to potting the scales is to use a hermetic design. Inthis embodiment, the base and platform are welded together with aflexible accordion-like section between them. Alternatively, anextrusion is formed with thin walls and further machining steps aretaken to ensure side wall flexibility. The load cells are pushed in fromthe end of the assembly and the end cap is welded to the assembly. Theelectrical connection is made through a feed thru which consists of ametal ring filled with glass and wires penetrating the glass.

FIGS. 51-62 show a fourth alternative embodiment of the high speed,weigh in motion strip scale 400 of the invention. Scale 400 has asubstantially similar structure and function to that of scales 100 and200 described above, except that it has an additional lower (first)checking plate or flexure 450 disposed below the central spacer 423, andthe checking plate 450 is disposed above an additional lower sidespacers 451. Seale 400 is also elongated, thin and low profile. It has abottom base assembly 411, several load cells 412, and a top platform413. Referring in particular to FIGS. 51, 56 and 61, the load cells 412are disposed a predetermined distance apart, along the centrallongitudinal axis of the base assembly 411. Base sides 420 a/b areconnected to the base member 421 along its sides a/b, longitudinally ontop of the spacers 451. End plates 422 are connected at the ends a/b ofthe base member 421. A center (side loading) strap 423 is disposed overthe load cells 412. A second 424 and a third 425 checking plate/flexureare disposed over the center strap 423. Second spacers 426 a, b and c(side a, center b and side c) are disposed on top of the third checkingplate 425. As is best shown in FIGS. 51 and 61, end straps 427 a/b aredisposed at the ends, over flexure 425 and connected via screws orbolts. Fourth and fifth checking plates/flexures 428 and 429 aredisposed on top of the second spacers 426, respectively. Third spacers432 a, b and c (side loading strap 1, center platform spacer and sideloading strap 2) are disposed over the fifth flexure 429. And platform413 is disposed over the third spacer set 432. These elements havepredetermined dimensions and are constructed and arranged as shown toprovide an optimum balance between load sensing and resistance to sideloading, particularly for high speed weighing of vehicles traveling overa roadway in which the scale is embedded. As is best shown in FIGS. 51and 62, each load cell 412 has a pair of washers 433 a/b centrallydisposed on its top, and a top load button and cap 434 a/b is disposedon the washers 433 for engagement with the center spacer 423. The loadcells 412 are connected to the base member 421 via, centrally aligneddownwardly oriented screws 440. As is best shown in FIGS. 51 and 62, thetop platform 413 is connected down to central side loading strap 423,second and third checking plates 424/5, the middle second spacer 426 b,fourth and fifth checking plates 428/9, and the platform spacer 423 b byupwardly oriented screws 441 arranged along the central longitudinalaxis of the scale 400. Elements 432, 428/9, 426, 424/5, 420, 450 and 451are connected to the base 421 at each side a/b of the scale 400 bydownwardly oriented screws 442

FIGS. 52-59 show embodiments of the load cell for use with theembodiments of the scale of the invention described above. FIGS. 52-55show a first embodiment of a load cell 112. The load cell 112 has acylindrical, disc shaped configuration. It may be used in the stripscale embodiments shown in FIGS. 13-38 and 51. Referring to FIGS. 56-59show a second embodiment of the load cell 12 has a generally rectangularconfiguration with a relatively long length and a relatively thin heightor thickness, or low profile. Load cell 12 is a single ended, shear beamtype load cell. It may be used in the strip scale embodiments shown inFIGS. 1-12 and 39-50.

The load cells shown in FIGS. 52-59 are associated with strain gauges asis generally known in the art on the load cells. The process of gaugingprocess involves first sandblasting the load cell (for example load cell12, 121, 500 or 600, then dipping it in alcohol as an initial cleaning.After dipping, the load cell is sprayed with alcohol as a rinsecleaning. After rinsing, gages are labeled and oriented at predeterminedlocations on the load cell. A predetermined amount of adhesive isapplied to bond the gages to the load cell. Care should be exercised toavoid contaminating material or debris that may be present on the gageduring gluing. Preferably, the gage should be inspected undermagnification after glue is applied. Glue should not be placed on thetop of the solder pads. Next, the assembly is cured, for example viaheat in an oven. After curing, the resistance values of each gage arerecorded. After verification of proper resistance values, wires areconnected to the gages. After wiring, a coating is applied to the gages.

FIGS. 60-63 show fifth alternative embodiment of a strip scale 510 ofthe present invention. The strip scale 510 has a low profile. It may beplaced on a surface such as a road or a floor, either directly orindirectly as part of a larger weighing system. The strip scale 510 maybe used for static weighing, but it is ideally suited for in motionweighing of vehicles or craft such as cars, trucks, aircraft, boats andother consumer, commercial, industrial, municipal or military articlesor apparatus. The scale 510 is relatively long compared to known scalesand very low profile. As is best shown in FIGS. 62 and 63, the scale 10basically comprises a bottom base 511, a load cell 512, an intermediarytop plate 513, and a top platform 514.

The base 511 is placed on a support surface (See FIG. 119 for example).The load cell 512 is placed on the top surface of the base 511. The topplate 513 is placed on the base 511, over the load cell 512. Pins 515are placed (end to end) in slots 516 disposed on the top surface of thetop plate 513. Platform 514 is placed over the top plate 513. Top, innerfastening screws 517 are oriented through apertures 518 a and 158 b(threaded) of the platform 514 and top plate 13 respectively to connectthe platform 514 to the top plate 513. Lower, outer fastening screws 519are oriented through apertures 520 a and 520 b (threaded) of the topplate 513 and base 511 respectively to connect the top plate 13 to thebase 511.

FIGS. 64-81 show several embodiments of the load cell for use with theembodiments of the scale of the invention. Referring to FIGS. 64-66,first embodiment of the load cell 512 has a generally rectangularconfiguration with a relatively long length and a relatively thin heightor thickness, or low profile. The load cell 512 has a body portion 571,a pair of legs 572 a and 572 b extending downwardly from the edges ofthe body 570, and a central base rail 573 extending upwardly from thecenter of the body 570. A foot 34 is disposed downwardly from each leg32. A top rail 35 extends upwardly from the center of the base rail 573.FIGS. 67-76 show second, third and fourth load cell structures 570′,570″ and 570′″ that are substantially similar to the geometry of loadcell 570, but have particular dimensions which differ. FIGS. 77-81 showsa fifth alternative embodiment of a low profile, elongated load cell 512⁴ which has a pair of slots 58 disposed at one end.

FIGS. 82-85 show methods and arrangements of strain gauges on the loadcells 512. FIG. 82 is a top view of one embodiment of a gauging patternon a load cell 512, for example a sixth embodiment of a load cell 512 ⁵.Load cell 512 ⁵ has a structure which is similar to that of load cells512 to 512″′, but does not have a bottom foot, or a top central baserail. FIG. 83 is a bottom view of the gauging pattern shown in FIG. 23.FIG. 84 is an end diagram for an example process of gauging a seventhembodiment of the load cell 512 ⁷ of the present invention. The loadcell 512 ⁷ has a similar structure to that of load cell 512, except thatit also has a top central base rail. FIGS. 85A and B are compressionside and tension side view of the gauging process of FIG. 25 on loadcell 512 ⁷. This embodiment of the process of gauging process involvesfirst sandblasting the load cell 512 then dipping it in alcohol as aninitial cleaning. After dipping, the load cell 512 ⁷ sprayed withalcohol as a rinse cleaning. After rinsing, gages labeled C1, C2, T1 andT2 are oriented at predetermined locations on the load cell 512 ⁷, forexample the locations shown in FIGS. 25 and 26. A predetermined amountof adhesive is applied to bond the gages to the load cell 512 ⁷. Careshould be exercised to avoid contaminating material or debris that maybe present on the gage during gluing. Preferably, the gage should heinspected under magnification after glue is applied. Glue should not beplaced on the top of the solder pads. Next, the assembly is cured, forexample via heat in an oven. After curing, the resistance values of eachgage are recorded. After verification of proper resistance values, wiresare connected to the gages. After wiring, coat M is applied to thegages.

FIGS. 86-88 show an embodiment of the base 511. The base 511 also has anelongated rectangular configuration. It has a flat bottom surface 550.Rails 551 a and 551 b are disposed along the sides of the base 511,extending upwardly. Threaded apertures 520 b are disposed in the rails551. Apertures 520 b are aligned with outer apertures 520 a of the topplate 513.

FIGS. 89-91 show an embodiment of the platform 514. The platform 514also has an elongated rectangular configuration. It has top and bottomflat surfaces. Apertures 518 a are disposed in the platform 514 intandem rows that, in a operative position, align with the innerapertures 518 b of the top plate 513.

And FIGS. 92-95 show an embodiment of the top plate 513. The top plate513 also has an elongated rectangular configuration. Referring to FIG.92, the top surface 570 of the plate 513 has the elongated slots 516 aand 516 b disposed toward the center of the plate 513 in parallel witheach other. The slots 516 a/b have a curvilinear shape that complementsthe outside diameter of the pins 14. The apertures 518 b are disposed inthe slots 516. Apertures 520 a are disposed in rows along the edges ofthe plate 513. Referring to FIGS. 93 and 95, the bottom surface 571 ofthe plate has four (4) slots 572 a-d running lengthwise orlongitudinally and parallel to each other.

FIGS. 96-99 show sixth alternative embodiment of the strip scale 680.The scale 680 has a substantially longer length than that of scale 610.Scale 680 has a unitary base 681, a pair of load cells 682 a and 682 b,a unitary top plate 683 and a unitary platform 684.

FIGS. 100-116 show a seventh alternative embodiment of the elongated,low profile strip scale 790 of the present invention. Referring first toFIGS. 100-109, scale 790 comprises a base 791, a plurality of load cells792 a-f, first side spacers 793 a/b, a first central spacer 793 c, afirst checking plate 7 94, second spacers 795 a-c, a second checkingplate 796, third spacers 797 a-c, and a top platform 798. Load cells 792are connected to the base preferably via screws 799, which furtherconnect on the top of the load cells to a load button 700 through one ormore washers 701 b. Details of the load cell 792 are shown in FIGS.110-116. This load cell 792 may also be used in the scale embodiments ofFIGS. 13-38 and 51.

FIGS. 117-119 show an embodiment of a system 850 including a pair ofstrip scales 810 a and 810 b disposed in a roadway 851 and orientedperpendicular to the direction of traffic such that a vehicle, forexample a truck 152 rolls over at least one scale 810. The scales 810a/b may be embedded into the roadway 151, either during initialconstruction of the roadway 851 or as an add on later. FIG. 43 shows ameans of embedding the scale 810 in the roadway 851. The scales 810 a/bare disposed a predetermined distance apart. The platform 814 of thescale 810 may be disposed above the top surface of the roadway 851 sothat it comes into direct contact with a load (i.e. a vehicle 852) or apredetermined distance below the surface so that intermediate materialtransfers force thereto. The scales 810 are communicatively connected toan electronic control system (not shown).

FIGS. 131-136 show another embodiment of the scale 900. The scale 900has a base 901, a plurality of load cells (not shown), and a platform903. Load cells may be used and arranged as shown in connection withscale 300 described above. A pair of internal foam members 904 and 905are disposed between the base 901 and the platform 903. The base 901 haslateral flanges 910 and slots/undercuts 911. The flanges 910 facilitatesecure holding of the scale in place in a roadway embedding slot. Theslots 911 also facilitate securement be accepting grout or otherembedding materials. FIGS. 127-132 show alternative flange and slotgeometries. External foam members 912 are disposed lengthwise. An epoxycoating 930 is preferably applied during installation embedding thescale 900 in a roadway. Grooves 940 are preferably made in the platform903. Most preferably, the grooves 940 are configured in a diamond-shapedconfiguration best shown in FIG. 121. Further, the grooves 940 arepreferably made in a dovetail geometry best shown in FIG. 126. Thehorizontal (diamond) and vertical (dovetail) configuration of thegrooves 940 facilitate optimum adhesion of the epoxy coating 930. FIG.133 shows an alternative embodiment of a platform 950 with downwardlyextended flanges 951 a/b for increased strength and water proofing.

The scales shown and described above disclose load cells which aremechanically fastened to the base and platform using bolts or screws.Optionally, the load cells may be used which are not fastened to thebase and/or the platform. Free floating load cells tend to have less offaxis loading and hence better performance. Shims made of suitable metalor plastic may be used to keep the load cells in the correct locations.This is viable and may increase performance if using disc type loadcells, for example FIGS. 52-55, FIGS. 110-115 or double ended shear beamload cells. Less constrained load cells allow for the use of a muchthinner base and slightly thinner platform. The base can be thinnerbecause there is no torque on the base. The platform may be thinnerbecause the load cells are less susceptible to flexing of the platform.Platform flexing creates off axis loading on! the load cells. The resultis a lower height scale that is easier to place in the roadway requiringless cutting, jack hammering and removal of roadway to create the slotfor the scales. Using steel for the base and platform also potentiallyreduces the height of the scale.

The platforms used in the scales are preferably sandable to create asurface flush with the roadway. Epoxy or polyurethane with a silica sandfiller makes a good platform finish. The platform is durable againsthigh vehicle traffic and sandable. The epoxy may also be directlyapplied to the platform using its adhesive qualities to bond to aluminumor steel finish. Alternatively, several plastics or fiberglass may besuitable for the platform finish. The plastic must have high impactresistance, ultra violet resistance, and excellent wear qualities. Inone embodiment, a 0.5 inch thick piece of fiberglass is bonded to theplatform. The bonding may be mechanical fastening, a spray on or brushon adhesive, or double sided tape or a combination of the above. Asuitable tape is 3M's VHB line of tape that is used in constructionreplacing screws and rivets.

The base and platforms disclosed herein may be made of the samematerial. Suitable materials include steel, particularly stainlesssteel, and aluminum, most particularly 6061 aluminum. The teachings ofthis invention about internal and external sealing foam, pottingcompounds, scale installation techniques, load cell electronics, andload cell gauging are generally applicable to substantially all of thescale embodiments disclosed. Although the scales of the invention areshown in connection with strain-gauge type load cells, it is within thepurview of the invention that piezoelectric type load cells may be usedeffectively.

FIGS. 145-147 show another embodiment of the strip scale 955 of thepresent invention. Referring to FIG. 145, the scale 955 includes a base956, at least one load cell 957 disposed on the base 956, and a platform958 (preferably constructed of aluminum) disposed over the at least oneload cell 957. In this embodiment, there are plural load cells 957,preferably six (6) 957A-F. The load cells 957A-F are spaced apart on thebase 956 and each fixed to the base via a fastener 959A-F. One end ofthe load cell is preferably aligned with a depression 954 in the floorof the base 956. A foam insert 953 is preferably placed in thedepression 956. A sealing member 960A-F is disposed on the top of eachload cell 957A-F. The sealing members 960 have pair of apertures. Theplatform 958 is fixedly connected to each load cell 957 via a fastener966 inserted through apertures 967. Referring also to FIG. 153, thescale 955 includes a set of compliant elements 961, 962 and 962 A-Fwhich is disposed between each load cell 957, in layered or laminatedfashion from bottom to top. An additional top element 952 is disposed ontop of the set at each end of the scale 955. Seals 963A-B are disposedon the sides of the base/platform 956/958. Seals 964A-F extend aroundthe sides and ends of the assembled scale 955. These seals 964 permitmovement of the platform within the roadway. Compliant members 961-944are preferably constructed of foam. The preferred foam is a very lowdurometer (i.e. soft) foam. The most preferred foam has acompressibility of approximately 25 percent deflection at approximately2.0 psi. A gel 966 is preferably injected around the layered foam set961-964. The gel 966 is preferably a silicone gel that is very soft andreenterable; that is to say very flexible, but not compressible. Scaleseals 964A-F are preferably constructed of a medium durometer (forexample approximately 15.0 psi) silicone foam. After placement in anoperating environment, for example a road way such as that shown inFIGS. 128-130, a grout is preferably placed over the platform 958, inthe space between the seals 964 as shown in FIG. 153. The grout may beepoxy, plastic or polyurethane based. In this embodiment, the load cellsare single ended, shear beam type load cells.

FIG. 146 shows an alternative embodiment of the base 970 for scale 955.Base 970 has pockets 971A-x formed by walls 972A-x disposed between loadcells. Recesses 973A-x are for placement of the load cell, adjacentaperture sets 974A-x. The pockets 971 serve as air pockets forcompression. They may be filled with foam, or simply taped over to forma seal. Walls 972 are not required to define the pockets 961, but arepreferred to add strength in higher load capacity scales. FIG. 147 showsan embodiment of the platform 980 including a cavity 985 with indentsets (982, 983 and 984 A-x) and end indent 981.

FIG. 148 is an exploded view of another alternative embodiment of thestrip scale 985. The scale 985 is substantially similar to the scale 955of FIGS. 145-147, except includes a single compliant member 990A-F inplace of the 3 or 4 part set of members 961, 962, 963 and 964. Scale 985comprises base 986, load cells 987A sealing member 988A-F, and platform989

FIGS. 149-153 show variations, in crossectional views of compliantelement of in scale designs. Each scale includes a base, at least oneload cell, and a platform. The cross-sections are taken at the end orbetween load cells where plural load cells are used. FIG. 149 is acrossectional view, between the load cells, of scale 985 of FIG. 148including the single foam layer 990. FIG. 150 discloses a variation withbubble structures 991 as or included in the compliant structure orelement(s). FIG. 151 discloses the use of bags 992. FIG. 152 disclosesthe use of balls 993. And, FIG. 153 is a view of scale 955 of FIG. 145including the plural foam layers or members 961, 962 and 963.

FIGS. 154-158 disclose a perspective view of an embodiment of a loadcell 1000 for use with strip scales. Load cell 1000 has a unitarystructure constructed of a single piece of material. This embodiment hasa length of 59.0 inches a height of 2.0 inches. The load cell can beconstructed in other lengths, for example, 69.0 inch and 79.0 inch withthe same height and lateral dimensions, by altering the dimensions ofthe bottom and top apertures. The cell 1000 has an I-Bean configurationwith a base portion 1002, a center portion 1004 and a top portion 1006.The center portion 1004 is inset on its sides relative to the base andtop portions 1002 and 1006. Base apertures 1008 are disposed atpredetermined, spaced positions in the center portion 1004 and have aslot shape of predetermined dimensions. A pair of center apertures1010A-B are aligned above each base aperture 1008, in the center portion1004. Top apertures 1012 are disposed at spaces positions in the centerportion 1004, staggered with respect to the base and center aperturepairs 1008 and 1010A/B. Top apertures 1012 overlap the center aperture1010B of one set with 1010A of a following set of apertures 1010. Aplurality of strain gauges, not shown, are coupled to the load cell1000.

FIGS. 159-162 show variations, in end views of another embodiment of aload cell design. FIG. 159 shows the simplest embodiment wherein theload cell 1020 with base, center and top regions 1022, 1024 and 1026.FIG. 160 is an alternative cell 1040 having substantially the samestructure of that of cell 1020 and including outside plates 1050A-B.

FIG. 161 is another alternative cell 1060 having substantially the samestructure of that of cell 1020 and including bent outside plates1070A-B. FIG. 162 is yet another alternative cell 1080 havingsubstantially the same structure of that of cell 1020 and includinginside plates 1090A-B. FIGS. 163 and 164 are front and end views of theload cell 1020 of FIG. 159. The center portion 1024 is inset on itssides relative to the base and top portions 1022 and 1026. Baseapertures 1028 are disposed at predetermined, spaced positions in thecenter portion 1024 and have a slot shape of predetermined dimensions. Apair of center apertures 1030A-B are aligned above each base aperture1028, in the center portion 1024. Top apertures 1032 are disposed atspaces positions in the center portion 1034, staggered with respect tothe base and center aperture pairs 1028 and 1030A/B. Top apertures 1032overlap the center aperture 1030B of one set with 1030A of a followingset of apertures 1030. Center channel segments 1034 are disposed betweencenter apertures 1030. FIGS. 165 and 166 are front and end views of theload cell 1080 of FIG. 162. FIGS. 167 and 168 are front and end views ofthe load cell 1040 of FIG. 160. And, FIGS. 169 and 170 are front and endviews of the load cell 1060 of FIG. 161.

FIGS. 171-74 show variations, in end views of another embodiment of aload cell design. FIG. 171 shows the simplest embodiment wherein theload cell 1120 with base, center and top regions 1122, 1124 and 1126.FIG. 172 is an alternative cell 1140 having substantially the samestructure of that of cell 1020 and including outside plates 1150A-B.FIG. 173 is another alternative cell 1160 having substantially the samestructure of that of cell 1120 and including bent outside plates1170A-B. FIG. 174 is yet another alternative cell 1180 havingsubstantially the same structure of that of cell 1120 and includinginside plates 1190A-B. FIGS. 175 and 176 are front and end views of theload cell 1120 of FIG. 171. The center portion 1124 is inset on itssides relative to the base and top portions 1122 and 1126. Baseapertures 1128 are disposed at predetermined, spaced positions in thecenter portion 1124 and have a slot shape of predetermined dimensions. Apair of center apertures 1130A-B are aligned above each base aperture1128, in the center portion 1124. Top apertures 1032 are disposed atspace positions in the center portion 1134, staggered with respect tothe base and center aperture pairs 1128 and 1130A/B. Top apertures 1132overlap the center aperture 1130B of one set with 1130A of a followingset of apertures 1130. Center channel segments 1134 are disposed betweencenter apertures 1130. FIGS. 177 and 178 are front and end views of theload cell 1180 of FIG. 174. FIGS. 179 and 180 are front and end views ofthe load cell 1140 of FIG. 172. And, FIGS. 181 and 182 are front and endviews of the load cell 1160 of FIG. 173.

The embodiments above are chosen, described and illustrated so thatpersons skilled in the art will be able to understand the invention andthe manner and process of making and using it. The descriptions and theaccompanying drawings should be interpreted in the illustrative and notthe exhaustive or limited sense. The invention is not intended to belimited to the exact forms disclosed. While the application attempts todisclose all of the embodiments of the invention that are reasonablyforeseeable, there may be unforeseeable insubstantial modifications thatremain as equivalents. It should be understood by persons skilled in theart that there may be other embodiments than those disclosed which fallwithin the scope of the invention as defined by the claims. Where aclaim, if any, is expressed as a means or step for performing aspecified function it is intended that such claim be construed to coverthe corresponding structure, material, or acts described in thespecification and equivalents thereof, including both structuralequivalents and equivalent structures, material-based equivalents andequivalent materials, and act-based equivalents and equivalent acts.

The invention claimed is:
 1. A scale comprising, a base for placement ona surface, the base having an elongated configuration, a plurality ofload cells communicatively connected to the base, a platform disposedover the base, the platform being communicatively connected to the loadcells, and at least one internal foam member disposed between adjacentload cells, the at least one internal foam member being disposed betweenthe base and the platform, the scale further having a predeterminedlength with sides, wherein a first external foam member is disposed onone side of the scale along the length of the scale, and a secondexternal foam member is disposed on an opposite side of the scale alongthe length of the scale.
 2. The scale of claim 1, wherein each load cellhas a plurality of strain gauges.
 3. The scale of claim 1, wherein theload cells are single ended, shear beam type load cells.
 4. The scale ofclaim 1, wherein there are six load cells disposed on the base, spacedapart from each other.
 5. The scale of claim 1, wherein there are twointernal foam members stacked on top of each other.
 6. The scale ofclaim 5, wherein the foam members have a compressibility ofapproximately 25 percent deflection at approximately 2.0 psi.
 7. Thescale of claim 1, for use in electronic, in-motion, high speed weighingof vehicles or cargo passing over the scale.
 8. The scale of claim 1,wherein the base placement surface is a floor or road, or a componentthereof, and wherein the base is embedded in the floor, road, orcomponent thereof.
 9. A scale adapted to be used in electronic,in-motion, high speed weighing of vehicles or cargo passing over thescale comprising, a base for placement on a surface, the base having anelongated configuration with a predetermined length, a top, a bottom,and opposing sides, a plurality of load cells communicatively connectedto the base, a platform disposed over the base, the platform beingcommunicatively connected to the load cells, at least one internal foammember disposed between adjacent load cells such that it is alsodisposed between the base and the platform; a first external foam memberdisposed on one side of the scale along the length of the scale, and asecond external foam member is disposed on an opposite side of the scalealong the length of the scale, the first and second external foammembers extending from the base to a predetermined point above a topsurface of the platform, whereby a space is formed between the first andsecond external foam members; and a layer of epoxy disposed in the spacebetween the first and second external foam members.
 10. A scale adaptedto be embedded in a roadway and used in electronic, in-motion, highspeed weighing of vehicles or cargo passing over the scale comprising,a. a base for placement on a surface, the base having an elongatedconfiguration with a predetermined length, a top, a bottom, and opposingsides, the base having: (1) a flange disposed on a bottom of the base,extending from each side of the base, and (2) at least one undercutdisposed on each side of the base, b. a plurality of load cellscommunicatively connected to the base and spaced apart from each other,c. a platform disposed over the base, the platform being communicativelyconnected to the load cells, d. at least one internal foam memberdisposed adjacent load cells such that it is also disposed between thebase and the platform; e. a first external foam member disposed on oneside of the scale along the length of the scale, and a second externalfoam member is disposed on an opposite side of the scale along thelength of the scale, the first and second external foam membersextending from the base to a predetermined point above a top surface ofthe platform, whereby a space is formed between the first and secondexternal foam members; and f. a layer of epoxy disposed in the spacebetween the first and second external foam members.
 11. The scale ofclaim 1, wherein the base has a flange disposed on a bottom of the base,extending from each side of the base.
 12. The scale of claim 1, whereinthe base has at least one undercut disposed on each side of the base.13. The scale of claim 1, wherein the first and second internal foammembers are each disposed on a ledge disposed on each side of the base.14. The scale of claim 1, further comprising a foil indent disposedbetween the first external foam member and the at least one internalfoam member and between the second external foam member and the at leastone internal foam member.
 15. The scale of claim 1, wherein the platformhas a pair of indents disposed on a top side of the platform, eachindent extending the length of the scale.
 16. The scale of claim 1,further comprising a layer of epoxy disposed on a top side of theplatform.